API 7-1 Drill Collars /Spiral Drill Collars for Well Drilling
TIANHE OIL GROUP HUIFENG PETROLEUM EQUIPMENT CO., LTD.- After-sales Service：Support
- Warranty：Support
- Manufacturing Process：Forging
- Surface Treatment：Spray-Paint
- Operation Pressure：Atmospheric Pressure
- Material：Alloy
Base Info
- Application：S: Energy & Mining,Well Drilling,Metallurgy Llury
- Transport Package：Wooden CAS, Iron Frame
- Specification：3 1,8"~11"OD
- Trademark：Tianhe
- Origin：China
- HS Code：8431431000
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